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  1. #1

    Default Wiring harness charge circuit available??

    2004 Suburban with the factory wiring for the trailering package. I would like to charge a battery on a trailer as I tow it.

    Does anyone know if these trucks came with a charge circuit prewired that I can use in the existing 7 pin harness.

    Thanks,

    David

  2. #2

    Default

    Quote Originally Posted by dgajr View Post
    2004 Suburban with the factory wiring for the trailering package. I would like to charge a battery on a trailer as I tow it.

    Does anyone know if these trucks came with a charge circuit prewired that I can use in the existing 7 pin harness.

    Thanks,

    David
    David,

    You have to run a fused wire from the battery back to the plug.
    Jim

    2004 SILVERADO 2500HD LS
    Pro Comp Leveling Kit
    285-75-16 Cooper ST All Terrains
    Pro Comp Programmer
    Bilstein Shocks
    Linux Bed Liner
    Tinted Windows



    Other rides:

    1967 Landcruiser <350 Chevy>
    1970 Camaro
    1990 Geo Metro Convertible
    2007 FJ Cruiser

  3. #3

    Default

    There is a red wire to the trailer connector identified as a "BAT". It is a larger gauge than the others (looks like a #12 awg). There is no voltage on it, even with the ignition on.

    I would think this terminates somewhere, hopefully in the fuse box.

    Anybody know?

    Thanks,

    David

  4. #4

    Default

    Look in the Power Distribution Box for a missing fuse. The truck is delivered without this fuse and you need to install one.

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